Question

Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 27.0m/s as it leaves the hose nozzle. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the angle of elevation of the hose until the water takes 3.30s to reach a building 45.0m away. You can ignore air resistance; assume that the end of the hose is at ground level.

A) Find the angle of elevation of the hose.

B) Find the speed of the water at the highest point in its trajectory. (m/s)

C) Find the acceleration of the water at the highest point in its trajectory. (m/s^2)

D) How high above the ground does the water strike the building? (m)

E) How fast is it moving just before it hits the building? (m/s)

Answer 1

Here is what I solved before, please modify the figures as per your question. Please let me know if you have further questions. Ifthis helps then kindly rate 5-stars.

Firemen are shooting a stream of water at a burning building using a high-pressure hose that shoots out the water with a speed of 29.0m/s as it leaves the end of the hose. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the angle of elevation ? of the hose until the water takes 3.00s to reach a building 52.12m away. You can ignore air resistance; assume that the end of the hose is at ground level.

Part A

Find the angle of elevation ?.

The answer is: ?= .............. degrees

Part B

Find the speed of the water at the highest point in its trajectory.

The answer is: v= ..................(m/s)

Part C

Find the magnitude of the acceleration of the water at the highest point in its trajectory.

The answer is: a: ................. (m/s^2)

Part D

How high above the ground does the water strike the building?

The answer is: y= ............... (m)

Part E

How fast is it moving just before it hits the building?

The answer is: v= ................. (m/s)

.................